MC1403, B
Low Voltage Reference
A precision band−gap voltage reference designed for critical
instrumentation and D/A converter applications. This unit is designed
to work with D/A converters, up to 12 bits in accuracy, or as a
reference for power supply applications.
• Output Voltage: 2.5 V 25 mV
• Input Voltage Range: 4.5 V to 40 V
• Quiescent Current: 1.2 mA Typical
• Output Current: 10 mA
• Temperature Coefficient: 10 ppm/°C Typical
• Guaranteed Temperature Drift Specification
• Equivalent to AD580
• Standard 8−Pin DIP, and 8−Pin SOIC Package
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PRECISION LOW VOLTAGE
REFERENCE
PDIP−8
P1 SUFFIX
CASE 626
8
1
Typical Applications
•
•
•
•
•
Voltage Reference for 8 to 12 Bit D/A Converters
Low TC Zener Replacement
High Stability Current Reference
Voltmeter System Reference
Pb−Free Package is Available
SOIC−8
D SUFFIX
CASE 751
8
1
PIN CONNECTIONS
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
Vin 1
8 NC
Symbol
Value
Unit
Vout 2
7 NC
VI
40
V
GND 3
6 NC
Tstg
−65 to 150
°C
NC 4
5 NC
Junction Temperature
TJ
+175
°C
Operating Ambient Temperature Range
MC1403B
MC1403
TA
−40 to +85
0 to + 70
°C
°C
Rating
Input Voltage
Storage Temperature
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
 Semiconductor Components Industries, LLC, 2005
March, 2005 − Rev. 4
1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
Publication Order Number:
MC1403/D
MC1403, B
+ 5.0 V
1
MC1403
2 2.5V
Full Scale
Adjust 500 1.0 k
R1
3
R2
Reference
Amplifier
IRef
*0.1 F
C1
Monolithic D/A
Converter
1.2 k
R3
* Caution: System stability may be affected if output capacitance
* exceeds 1.0 F. Using higher capacitance values is not
* recommended and should be carefully considered.
Figure 1. A Reference for Monolithic D/A Converters
Providing the Reference Current
for ON Semiconductor Monolithic D/A Converters
The resistor R3 improves temperature performance by
matching the impedance on both inputs of the D/A reference
amplifier. The capacitor decouples any noise present on the
reference line. It is essential if the D/A converter is located
any appreciable distance from the reference.
A single MC1403 reference can provide the required
current input for up to five of the monolithic D/A converters.
The MC1403 makes an ideal reference for many monolithic D/A converters, requiring a stable current reference of
nominally 2.0 mA. This can be easily obtained from the
MC1403 with the addition of a series resistor, R1. A variable
resistor, R2, is recommended to provide means for full−
scale adjust on the D/A converter.
ELECTRICAL CHARACTERISTICS (Vin = 15 V, TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Vout
2.475
2.5
2.525
V
VO/T
−
10
40
ppm/°C
Output Voltage
(IO = 0 mA)
Temperature Coefficient of Output Voltage*
MC1403
Output Voltage Change*
(Over specified temperature range)
MC1403B 0 to + 70°C
MC1403B −40 to + 85°C
VO
mV
−
−
−
−
7.0
12.5
−
−
1.2
0.6
4.5
3.0
Line Regulation (IO = 0 mA)
(15 V VI 40 V)
(4.5 V VI 15 V)
Regline
Load Regulation
(0 mA < IO < 10 mA)
Regload
−
−
10
mV
IQ
−
1.2
1.5
mA
Quiescent Current
(IO = 0 mA)
*Guaranteed but not tested.
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2
mV
MC1403, B
Vin
2.0 k
2.0 k
2.0 k
2.0 k
1.0 k
32
Vout
1.5 k
C1
30 pF
10 k
1.73k
2.37 k
1.0 k
5.61 k
This device contains 15 active transistors.
Figure 2. MC1403, B Schematic
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3
1.483 k
∆Vout , CHANGE IN OUTPUT VOLTAGE (mV)
MC1403, B
∆ Vout , CHANGE IN Vout (mV)
2.0
1.0
25°C
0
−1.0
0°C
−2.0
75°C
−3.0
−4.0
−5.0
−6.0
0
10
20
30
Vin, INPUT VOLTAGE (V)
40
10
9.0
8.0
7.0
6.0
5.0
4.0
75°C
3.0
2.0
0°C
1.0
0
50
25°C
0
1.0
2.0
3.0 4.0 5.0 6.0
7.0
Iout, OUTPUT CURRENT (mA)
8.0
9.0
10
Figure 4. Change in Output Voltage
versus Load Current
Figure 3. Typical Change in Vout versus Vin
(Normalized to Vin = 15 V @ TC = 25°C)
(Normalized to Vout @ Vin = 15 V, Iout = 0 mA)
∆ Vout , CHANGE IN Vout (mV)
1.20
1.15
1.10
1.05
1.00
0.95
0.90
Iout = 2 mA
Vin = 15 V
0
−2.0
Vin = 5.0 V
−4.0
−6.0
−8.0
−10
−12
0
−40 −30 −20 −10
0 10 20 30 40 50
TA, TEMPERATURE (°C)
60 70
−14
−40 −30 −20 −10
80 85
0
10 20 30 40 50
TA, TEMPERATURE (°C)
60 70
80 85
Figure 5. Quiescent Current versus Temperature
Figure 6. Change in Vout versus Temperature
(Vin = 15 V, Iout = 0 mA)
(Normalized to Vout @ Vin = 15 V)
4.0
∆ Vout , CHANGE IN Vout (mV)
I1, QUIESCENT CURRENT (mA)
1.25
2.0
IO = 0 mA
= 2.0 mA
0
−2.0
= 8.0 mA
−4.0
= 5.0 mA
−6.0
−8.0
−10
−12
−40 −30 −20 −10
0
10
20
30
40
50
60 70
80 85
TA, TEMPERATURE (°C)
Figure 7. Change in Vout versus Temperature
(Normalized to TA = 25°C, Vin = 15 V, Iout = 0 mA)
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4
MC1403, B
3−1/2−Digit Voltmeter − Common Anode
Displays, Flashing Overrange
is done by dividing the EOC pulse rate by 2 with 1/2
MC14013B flip−flop and blanking the display using the
blanking input of the MC14543B.
The display uses an LED display with common anode
digit lines driven with an MC14543B decoder and an
MC1413 LED driver. The MC1413 contains 7 Darlington
transistor drivers and resistors to drive the segments of the
display. The digit drive is provided by four MPS−A12
Darlington transistors operating in an emitter−follower
configuration. The MC14543B, MC14013B and LED
displays are referenced to VEE via Pin 13 of the MC14433.
This places the full power supply voltage across the display.
The current for the display may be adjusted by the value of
the segment resistors shown as 150 in Figure 8.
An example of a 3−1/2−digit voltmeter using the
MC14433 is shown in the circuit diagram of Figure 8. The
reference voltage for the system uses an MC1403 2.5 V
reference IC. The full scale potentiometer can calibrate for
a full scale of 199.9 mV or 1.999 V. When switching from
2.0 V to 200 mV operation, RI is also changed, as shown on
the diagram.
When using RC equal to 300 k, the clock frequency for
the system is about 66 kHz. The resulting conversion time
is approximately 250 ms.
When the input is overrange, the display flashes on and
off. The flashing rate is one−half the conversion rate. This
MC1403
20 k
2
−5.0 V
0.1F
+5.0 V
3
0.1F
300 k
RC
11 10
VX
2
MC14433
0.1 F **
13
7
8
0.1 F
4 1
2
3
5
23
22
21
20
4
5
6
+5.0 V
0.1 F
12 24
3
1
RI *
+5.0 V
0.1 F
−5.0 V
16 9
6
8
7
6
5
4
3
2
1
10
11
12
13
14
15
7
−5.0 V
9
14
Segment Resistors
150 (7)
MC1413
1
MC14543B
+5.0 V
−5.0 V
−5.0 V
15 19 18 17 16
5.0 V
DS1
DS2
−5.0 V
6
5
DS3
3
DS4
D
C
S
R
Q
Q
1
2
51 k
MC14013B
4
+5.0 V
8
9
D S Q 13
11 C
Q 12
R
14
7 10
* RI = 470 k for 2.0 V Range
RI = 27 k for 200 mV Range
** Mylar Capacitor
10
11
12
13
14
15
16
50 F
−5.0 V
+5.0 V
−5.0 V
Figure 8. 3−1/2−Digit Voltmeter
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5
Minus Sign
f g e d c b a
200 MPS−A12 Plus Sign
110 Common
Anode
LED
Display
0.1 F
MPS−A12
(4)
MC1403, B
ORDERING INFORMATION
Device
MC1403D
Package
Operating Temperature Range
Shipping†
SOIC−8
98 Units/Rail
MC1403DG
SOIC−8
(Pb−Free)
98 Units/Rail
MC1403DR2
SOIC−8
MC1403DR2G
MC1403P1
2500 Tape/Reel
TA = 0° to +70°C
SOIC−8
(Pb−Free)
2500 Tape/Reel
PDIP−8
1000 Units/Rail
PDIP−8
(Pb−Free)
1000 Units/Tubes
SOIC−8
98 Units/Rail
MC1403BDG
SOIC−8
(Pb−Free)
98 Units/Rail
MC1403BDR2
SOIC−8
MC1403P1G
MC1403BD
TA = − 40° to +85°C
2500 Tape/Reel
MC1403BP1
PDIP−8−8
1000 Units/Rail
MC1403BP1G
PDIP−8−8
(Pb−Free)
1000 Units/Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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6
MC1403, B
PACKAGE DIMENSIONS
PDIP−8
P1 SUFFIX
CASE 626−05
ISSUE L
8
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
5
−B−
1
4
F
−A−
NOTE 2
L
C
J
−T−
N
SEATING
PLANE
D
H
M
K
G
0.13 (0.005)
M
T A
M
B
M
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7
DIM
A
B
C
D
F
G
H
J
K
L
M
N
MILLIMETERS
MIN
MAX
9.40
10.16
6.10
6.60
3.94
4.45
0.38
0.51
1.02
1.78
2.54 BSC
0.76
1.27
0.20
0.30
2.92
3.43
7.62 BSC
−−−
10
0.76
1.01
INCHES
MIN
MAX
0.370
0.400
0.240
0.260
0.155
0.175
0.015
0.020
0.040
0.070
0.100 BSC
0.030
0.050
0.008
0.012
0.115
0.135
0.300 BSC
−−−
10
0.030
0.040
MC1403, B
PACKAGE DIMENSIONS
SOIC−8
D SUFFIX
CASE 751−07
ISSUE AE
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.
−X−
A
8
5
S
B
1
0.25 (0.010)
M
Y
M
4
K
−Y−
G
C
N
DIM
A
B
C
D
G
H
J
K
M
N
S
X 45 SEATING
PLANE
−Z−
0.10 (0.004)
H
D
0.25 (0.010)
M
Z Y
S
X
M
J
S
MILLIMETERS
MIN
MAX
4.80
5.00
3.80
4.00
1.35
1.75
0.33
0.51
1.27 BSC
0.10
0.25
0.19
0.25
0.40
1.27
0
8
0.25
0.50
5.80
6.20
INCHES
MIN
MAX
0.189
0.197
0.150
0.157
0.053
0.069
0.013
0.020
0.050 BSC
0.004
0.010
0.007
0.010
0.016
0.050
0 8 0.010
0.020
0.228
0.244
SOLDERING FOOTPRINT*
1.52
0.060
7.0
0.275
4.0
0.155
0.6
0.024
1.270
0.050
SCALE 6:1
mm inches
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 61312, Phoenix, Arizona 85082−1312 USA
Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada
Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada
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N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
ON Semiconductor Website: http://onsemi.com
Order Literature: http://www.onsemi.com/litorder
Japan: ON Semiconductor, Japan Customer Focus Center
2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051
Phone: 81−3−5773−3850
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8
For additional information, please contact your
local Sales Representative.
MC1403/D